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Finding the Third Proportional to 35,730 and 68,220

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Solution

The third proportional to 35,730 and 68,220 is: 130,253.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,730 : 68,220 = 68,220 : x
  2. Step 2: Convert to fraction form
    35,730/68,220 = 68,220/x
  3. Step 3: Cross multiply
    35,730x = 68,220 × 68,220
  4. Step 4: Simplify right side
    35,730x = 4,653,968,400
  5. Step 5: Solve for x
    x = 4,653,968,400/35,730
  6. Step 6: Final answer
    x = 130,253.80

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Why These Related Problems?

These problems maintain the same ratio (1.91) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.